001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.record.compiler;
020
021import org.apache.hadoop.classification.InterfaceAudience;
022import org.apache.hadoop.classification.InterfaceStability;
023
024/**
025 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>.
026 */
027@Deprecated
028@InterfaceAudience.Public
029@InterfaceStability.Stable
030public class JFloat extends JType {
031  
032  class JavaFloat extends JavaType {
033    
034    JavaFloat() {
035      super("float", "Float", "Float", "TypeID.RIOType.FLOAT");
036    }
037    
038    String getTypeIDObjectString() {
039      return "org.apache.hadoop.record.meta.TypeID.FloatTypeID";
040    }
041
042    void genHashCode(CodeBuffer cb, String fname) {
043      cb.append(Consts.RIO_PREFIX + "ret = Float.floatToIntBits("+fname+");\n");
044    }
045    
046    void genSlurpBytes(CodeBuffer cb, String b, String s, String l) {
047      cb.append("{\n");
048      cb.append("if ("+l+"<4) {\n");
049      cb.append("throw new java.io.IOException(\"Float is exactly 4 bytes."+
050                " Provided buffer is smaller.\");\n");
051      cb.append("}\n");
052      cb.append(s+"+=4; "+l+"-=4;\n");
053      cb.append("}\n");
054    }
055    
056    void genCompareBytes(CodeBuffer cb) {
057      cb.append("{\n");
058      cb.append("if (l1<4 || l2<4) {\n");
059      cb.append("throw new java.io.IOException(\"Float is exactly 4 bytes."+
060                " Provided buffer is smaller.\");\n");
061      cb.append("}\n");
062      cb.append("float f1 = org.apache.hadoop.record.Utils.readFloat(b1, s1);\n");
063      cb.append("float f2 = org.apache.hadoop.record.Utils.readFloat(b2, s2);\n");
064      cb.append("if (f1 != f2) {\n");
065      cb.append("return ((f1-f2) < 0) ? -1 : 0;\n");
066      cb.append("}\n");
067      cb.append("s1+=4; s2+=4; l1-=4; l2-=4;\n");
068      cb.append("}\n");
069    }
070  }
071
072  class CppFloat extends CppType {
073    
074    CppFloat() {
075      super("float");
076    }
077    
078    String getTypeIDObjectString() {
079      return "new ::hadoop::TypeID(::hadoop::RIOTYPE_FLOAT)";
080    }
081  }
082
083  /** Creates a new instance of JFloat */
084  public JFloat() {
085    setJavaType(new JavaFloat());
086    setCppType(new CppFloat());
087    setCType(new CType());
088  }
089  
090  String getSignature() {
091    return "f";
092  }
093}